What element did Fowler extensively study in the Sun's spectrum?
Hydrogen
Helium
Oxygen
Carbon
Answer
Helium was extensively studied in the Sun's spectrum by Fowler. He observed that the helium lines in the Sun's spectrum were much stronger than expected based on the abundance of helium in the Earth's atmosphere. This led him to conclude that helium was much more abundant in the Sun than on Earth. Fowler's work helped to establish the importance of helium in the Sun and other stars.
Stargazing with Sir Alfred Fowler: An Astronomical Adventure Quiz
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